COUNTY AT A GLANCE
Founded in 1757, Loudoun County is a growing, dynamic county of over 450,000 people. The county is known for its beautiful scenery, rich history, healthy diversity of expanding business opportunities, comfortable neighborhoods, and high-quality public services. The following demographics shape the county’s services and budget.
POPULATION
Loudoun County is the 4th most populated county in Virginia, with an annual population increase exceeding 20% since 2015, including more than 8% each year between 2020 and 2025.
FY 2027 Population Projection: 465,884
100,000 0 200,000 300,000 400,000 500,000 600,000
2.2% 1.9%
4.7% 3.7%
5.7%
8.1%
14.2%
18.0%
20.5%
2015
2020 2025
2010
2030 2035
2050
2040 2045
Source: Decennial Census (2010,2020) Loudoun County Office of Management and Budget (2015, 2025), Metropolitan Washington Council of Governments Cooperative Round 10.0 Cooperative Forecast (2040-2050)
HOUSEHOLD INCOME
AGE DISTRIBUTION
A majority of the population is between 20 and 64 years old, with relatively smaller proportions in the youngest (under 5) and oldest (64+) age groups.
The community has a strong concentration of higher‑income households earning $100,000 or more.
$75,000 to $99,999 $100,000 to $149,999 $150,000 to $199,999 $200,000+
Less than $24,999 $25,000 to $34,999 $35,000 to $49,999 $50,000 to $74,999
35%
30%
25%
3.3% 2.5% 4%
20%
7.2%
15%
8.8%
10%
44.1%
5%
15.1%
0%
14.5%
64+ years
5-19 years
20-44 years
45-64 years
Under 5 years
Source: U.S. Census Bureau, 2024 American Community Survey 1-Year Estimates, Table S0101
Source: U.S. Census Bureau, 2024 American Community Survey 1-Year Estimates, Table S1901
4 / FY 2027 BUDGET IN BRIEF LOUDOUN COUNTY, VA
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